Inventors at work, with chapters on discovery (1906)
Iles, George, 1852-1942 · New York, Doubleday, Page & company · leaf 365
Travsm/tterJ/qgrrets- /rece/Ver … Trayett/ngfY/re- Twitting Mre^7^~Q>nf3(*ftriff •Sound Waresj/Feo/re, Magnet/catty t?ecor(/e<£//? ttretY/n Telegraphone.Diagram of working parts. by an amanuensis. Or, better still, the message may be spokenupon a small, revolving disc of steel, and mailed to a corre-spondent who listens to…
Inventions · Inventors
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer01inte-230-100.webp)